package com.feng.gulimall.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.feng.common.constant.ProductConstant;
import com.feng.common.utils.BeanCopyUtils;
import com.feng.common.utils.PageUtils;
import com.feng.common.utils.Query;
import com.feng.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.feng.gulimall.product.dao.AttrDao;
import com.feng.gulimall.product.dao.AttrGroupDao;
import com.feng.gulimall.product.dao.CategoryDao;
import com.feng.gulimall.product.dto.AttrDto;
import com.feng.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.feng.gulimall.product.entity.AttrEntity;
import com.feng.gulimall.product.entity.AttrGroupEntity;
import com.feng.gulimall.product.entity.CategoryEntity;
import com.feng.gulimall.product.service.AttrAttrgroupRelationService;
import com.feng.gulimall.product.service.AttrGroupService;
import com.feng.gulimall.product.service.AttrService;
import com.feng.gulimall.product.service.CategoryService;
import com.feng.gulimall.product.vo.AttrGroupRelationVo;
import com.feng.gulimall.product.vo.AttrRespVo;
import com.feng.gulimall.product.vo.AttrVo;
import org.apache.commons.lang.StringUtils;
import org.checkerframework.checker.units.qual.A;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {
   @Autowired
   private AttrAttrgroupRelationService attrAttrgroupRelationService;
   @Autowired
   private AttrGroupService attrGroupService;
   @Autowired
   private CategoryService categoryService;
   @Autowired
   private AttrAttrgroupRelationDao relationDao;
   @Autowired
   private AttrGroupDao attrGroupDao;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    @Transactional
    public void saveAttr(AttrDto attr) {
        AttrEntity attrEntity = BeanCopyUtils.copyBean(attr, AttrEntity.class);
        //保存基本数据
        this.save(attrEntity);
        //保存关联关系
        if(attr.getAttrType()== ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()&&attr.getAttrGroupId()!=null){
            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity=new AttrAttrgroupRelationEntity();
            attrAttrgroupRelationEntity.setAttrGroupId(attr.getAttrGroupId());
            attrAttrgroupRelationEntity.setAttrId(attrEntity.getAttrId());
            attrAttrgroupRelationService.save(attrAttrgroupRelationEntity);
        }

    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId,String type) {
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>();
        queryWrapper.eq("attr_type","base".equalsIgnoreCase(type)?ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode():ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());
        //根据catelogId查询信息
        if (catelogId != 0) {
            queryWrapper.eq("catelog_id",catelogId);

        }

        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            //attr_id attr_name
            queryWrapper.and((wrapper) -> {
                wrapper.eq("attr_id",key).or().like("attr_name",key);
            });
        }

        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper
        );
        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();
        List<AttrVo> resposeVo = records.stream().map((e) -> {
            AttrVo attrVo ;
            attrVo = BeanCopyUtils.copyBean(e, AttrVo.class);
            if("base".equalsIgnoreCase(type)){
                LambdaQueryWrapper<AttrAttrgroupRelationEntity> queryWrapper1=new LambdaQueryWrapper<>();
                queryWrapper1.eq(AttrAttrgroupRelationEntity::getAttrId,e.getAttrId());
                AttrAttrgroupRelationEntity attrs = attrAttrgroupRelationService.getOne(queryWrapper1);
                if(attrs!=null){
                    Long attrGroupId = attrs.getAttrGroupId();
                    if (attrGroupId != null) {
                        AttrGroupEntity attrGroupEntity = attrGroupService.getById(attrGroupId);
                        attrVo.setGroupName(attrGroupEntity.getAttrGroupName());
                    }
            }
                CategoryEntity categoryEntity = categoryService.getById(e.getCatelogId());
                if (categoryEntity != null) {
                    attrVo.setCatelogName(categoryEntity.getName());
                }
            }
            return attrVo;
        }).collect(Collectors.toList());
        pageUtils.setList(resposeVo);
        return pageUtils;
    }

    @Override
    public AttrVo getAttrInfo(Long attrId) {
        AttrEntity attrEntity = this.getById(attrId);
        AttrVo attrVo = BeanCopyUtils.copyBean(attrEntity, AttrVo.class);
        if(attrEntity.getAttrType()==ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){
            LambdaQueryWrapper<AttrAttrgroupRelationEntity> queryWrapper=new LambdaQueryWrapper<>();
            queryWrapper.eq(AttrAttrgroupRelationEntity::getAttrId,attrId);
            AttrAttrgroupRelationEntity attrs = attrAttrgroupRelationService.getOne(queryWrapper);
            if(attrs!=null){
                attrVo.setAttrGroupId(attrs.getAttrGroupId());
                Long attrGroupId = attrs.getAttrGroupId();
                AttrGroupEntity attrGroupEntity = attrGroupService.getById(attrGroupId);
                if(attrEntity!=null){
                    attrVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
        }

        Long catelogId = attrEntity.getCatelogId();
        Long[] catelogPath = categoryService.findCatelogPath(catelogId);
        attrVo.setCatelogPath(catelogPath);
        CategoryEntity byId = categoryService.getById(catelogId);
        attrVo.setCatelogName(byId.getName());
       return attrVo;
    }

    @Override
    @Transactional
    public void updateAttr(AttrDto attr) {
        AttrEntity attrEntity = BeanCopyUtils.copyBean(attr, AttrEntity.class);
        this.updateById(attrEntity);
        if(attrEntity.getAttrType()==ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){
            //修改分组关联
            LambdaUpdateWrapper<AttrAttrgroupRelationEntity> queryWrapper=new LambdaUpdateWrapper<>();
            queryWrapper.eq(AttrAttrgroupRelationEntity::getAttrId,attr.getAttrId());
            AttrAttrgroupRelationEntity relationEntity=new AttrAttrgroupRelationEntity();
            LambdaQueryWrapper<AttrAttrgroupRelationEntity> query=new LambdaQueryWrapper<>();
            query.eq(AttrAttrgroupRelationEntity::getAttrId,attr.getAttrId());
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attr.getAttrId());
            int count = attrAttrgroupRelationService.count(query);
            if(count>0){
                attrAttrgroupRelationService.update(relationEntity,queryWrapper);
            }
            else {
                attrAttrgroupRelationService.save(relationEntity);
            }
        }



    }

    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {
        List<AttrAttrgroupRelationEntity> entities = relationDao.selectList
                (new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));

        List<Long> attrIds = entities.stream().map((attr) -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        //根据attrIds查找所有的属性信息
        //Collection<AttrEntity> attrEntities = this.listByIds(attrIds);

        //如果attrIds为空就直接返回一个null值出去
        if (attrIds == null || attrIds.size() == 0) {
            return null;
        }

        List<AttrEntity> attrEntityList = this.baseMapper.selectBatchIds(attrIds);

        return attrEntityList;
    }

    @Override
    public void deleteRelation(AttrGroupRelationVo[] vos) {
        //relationDao.delete(new QueryWrapper<>().eq("attr_id",1L).eq("attr_group_id",1L));

        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map((item) -> {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item, relationEntity);
            return relationEntity;
        }).collect(Collectors.toList());

        relationDao.deleteBatchRelation(entities);
    }

    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        //1、当前分组只能关联自己所属的分类里面的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        //获取当前分类的id
        Long catelogId = attrGroupEntity.getCatelogId();

        //2、当前分组只能关联别的分组没有引用的属性
        //2.1）、当前分类下的其它分组
        List<AttrGroupEntity> groupEntities = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>()
                .eq("catelog_id", catelogId));

        //获取到所有的attrGroupId
        List<Long> collect = groupEntities.stream().map((item) -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());


        //2.2）、这些分组关联的属性
        List<AttrAttrgroupRelationEntity> groupId = relationDao.selectList
                (new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));

        List<Long> attrIds = groupId.stream().map((item) -> {
            return item.getAttrId();
        }).collect(Collectors.toList());

        //2.3）、从当前分类的所有属性移除这些属性
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>()
                .eq("catelog_id", catelogId).eq("attr_type",ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());

        if (attrIds != null && attrIds.size() > 0) {
            queryWrapper.notIn("attr_id", attrIds);
        }

        //判断是否有参数进行模糊查询
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            queryWrapper.and((w) -> {
                w.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), queryWrapper);

        PageUtils pageUtils = new PageUtils(page);


        return pageUtils;
    }

}
